Door securing device



Jan. 30, 1945.

A. CHAMBERS ET AL DOOR SECURING DEVICE Filed April 20, 1942 4 Sheets-Sheet 1 frp. Z 24 4 44% 202 66 236- J m A 1% INVENTORS.

ATTORNEY.

Jan. 30, 1945. A CHAMBERS A 2,368,411

DOOR SECURING DEVICE Filed April 20, 1942 4 Sheets-Sheet 3 ATTORNEY.

BY M /M Jan. 30, 1945. CHAMBERS HAL 2,368,411

DOOR SECURING DEVICE Filed April 20, 1942 4 Sheets-Sheet 4 gg/w,

ATTORNEY.

Patented Jan. 30, 1945 UNITED STAT noon SECURING DEVICE Allen Chambers, Independence, and Roy E. 'Ge'arhart, Kansas City, Mo., assi'gno'rs of one-third to W. E. Ludwig, Kansas City, Mo.-

Application April 20, 1942, serial No. 439,790

4 Claims.

This invention relates to improvements in a door securing device and has particular reference to a door securing device wherein the door is secured to the door iamb for a limited opening position.

In devices of this character and especially where the door securing device is operablefrom both inside and outside the door, much difficulty has been experienced in properly positioning the parts and adjusting them todoors-of different] thicknesses.

This invention is an improvement over our pending application Serial No. 419,956, and has for its principal object the provision of a door securing device wherein the parts are easily as-- sembled and can be positioned on the door structure by any carpenter without the possibility of having the operating parts out of proper alignment.

Another object of the present invention is the provision of a door securing device including a slidably mounted bolt having three selective operating positions each of which is mechanically indicated to the operator.

' r A further object is the provision of a door 'securing device which is provided with a bolt correctly assembled which is reversible to-accomleft in elevation and. the bolt shown in theretracted position in dotted lines.

Fig. 8 is an enlarged sectional view taken on line VIII-VIII of Fig. 3. v I I Fig. 9 is a vertical sectional view taken. on line ire-1x of. Fig. 7.

modate doors opening in the opposite directions.

Other objects are simplicity and economy of construction, ease and eil'iciencyof operation, and

adaptability for use with thevarioustypes-of doors, and to affect different combinations of opening and closing from opposite sides of the door.

'With these objects aswell as others which will appear during the course of the specification, in view, reference will now be had to the drawings wherein,

Figure 1 is an inside elevation of 'a portion of a door operatively mounted in the door frame and having a securin device embodying this invention.

Fig. 2 is a cross sectional view taken on line II--II of Fig. 1 with the door shown in the partially open position in dotted lines.

Fig. 3 is an outside elevation of a portion of the door and its mounting frame showing certain portions of the door securing device.

Fig. 4 is an enlarged view of a portion of the face o-fthe door jamb with the extension bar. and housing shown in position thereon "and with parts broken away to show the extension'bar inthe closed position in solid lines, .andextended in dotted lines. e e 1 Fig. 5 is an enlarged sectional view taken on f Fig. is avertical sectional view taken on line X---X1 of Fig. '7.

Fig. 11 is an enlarged detailed elevational view ofthe. bolt operating lever and certain-of its associated parts shown in its two extreme positions. Fig. 12 is an enlarged fragmentary sectional view of certain of the leveroperating parts.

Fig. 13' is a detached face view of the door lamb 1 housing.

Fig. 14 is a vertical sectional view taken on line XIVXIV of Fig. '7.

Fig. 15 is an elevational view of the lock bolt.

Fig. 16 is a perspective view of the extension sleeve,

, Fig. 17 is a sectional-view' similar to Fig. 8 withcertain modifications of some of the parts.

Fig. 18 is a. fragmentary sectional view taken on line XVIII-XVIHof Fig. 17.

FigQlQ is a fragmentary enlarged sectional view taken on line XIX- XIX of Fig. 18-;

Fig. 20 1s a perspective view or the lever securing sleeve." I a Fig. 21 is a Vertical View partially in section with certain modifications-of some of the parts.

1 Fig. 22 is a horizontal sectional view taken on line XXIL-XXII of Fig. 21'.

Fig. 23 is a fragmentary reduced elevational view of the face view of the door jambl with the associated parts partially broken away.

Throughout the several views. like reference characters designate similar parts, and the numeral 20 is a door-frame inwhi'ch. is mounted a doorvv 22' for swinging. movement on hinges 24. The door frame is secured to studs 26 and includes a door janrb 28- having its face 30 slightly spaced apart from the edge of the-door when the door isin-the closed position. a

. A door stop 32 secured to the face of jamb 28 serves as an abutment for the door whereby it is maintained in substantially nusiirelation with th einner edge-of ja'mb at when the door is closed. The usual door'casings 34' partially overlap the shown in Fig. 6.

edge of lamb 28 and extend outwardly therefrom.

For securely holding the door in the partially open position for ventilation and for protection from intrusion when answering the door, the following door securing device is provided. The preferred form of this device is shown in Figs. 1-16 inclusive, and includes a housing 36, having side walls 38 and 40spaced apart with the inside wall 38 ofiset and welded at certain points W to the planar outside wall 40. The housing is open at its front edge 46. Side wall 40 which is normally adjacent the edge of door 22 is provided adjacent its upper end with a bight 42.

It will be noted that the width of housing 36' is substantially the thickness of the door 22 and it is morticed into jamb 28 so that the outer surface of wall 40 is in planar relation with the face 30 of the door jamb. The housing 36 is held in position by means ofa counter-sunk screw 44 which is disposed flush with the outer surface of wall 38 and in alignment with opening 45 formed through wall 40 as clearly shown in Fig. 6. An offset portion 41 formed inwardly in wall 38, is directly opposite bight 42 formed in the outer housing wall 40 and extends transversely across the wall 38 to the front edge of the housing and has a forwardly projecting tongue 49 to overlap the casing 34 which may be slightly beveled or offset at 48.

The screw 44 is so positioned, relative to the hole 45 formed in the side wall 40, that it is not accessible therethrough when the extension bar 50, pivoted at 66 within said housing, is in the normal positions as shown in Fig. 4; however, when the extension bar is moved to the extended and completely raised position with the door wide open, the bar is moved from between hole 45 and the head of the screw so that the screw can be Y removed or set. A suitable screw 52 may be provided for securing the end portion of the housing against displacement.

It will be noted that the door jamb is recessed at 54 to receive the lateral flanges 56 formed in the wall 38 in horizontal alignment with the bight 42 formed in wall 40. These flanges 56 are'vertically elongated to compensate for sagging of the door and are snugly fitted into recess 54 to hold the'housing 36 in position andagainst transverse movement when the limiting bar is in use.

Extension bar is provided with a longitudinal slot 58 having an enlarged portion 60 at its upper end and outwardly disposed offset 62 at its lower end. The bar is downwardly tapered and rests against offset 64 of wall 38 when its outer edge is flush with the outer face of housing 35. The pivotal pin 66 of the extension bar 50 is slightly above bight 42 so that the pin 66 isdefinitely secured in both of the walls 38 and 40 as clearly A tension spring 68 rigidly secured to wall 38 at 10 extends upwardly to engageextension bar 50 above pivot 66 thereby tending to urge the bar against oifset 64 when the bar is in the normal position and also servesto urge the outer extremity of the bar 50 downwardly when the bar is in the extended position shown in dotted lines in Fig. 4. Other types of spring tension might be utilized for this same purpose without any material changes in the general structure of the device.

One form of suitable adjustable means carried by the door for operatively engaging the extension bar 50 is shown in the form of a bolt 12 slidably mounted in a housing 14 which is inserted in a recess I6 formed inwardly from the edge surface of the door. This housing is securely anchored by means of screws 78 which pass through housing plate 80. Bolt I2 is provided at its inner portion with a bifurcated member 82 which is disposed in a vertical position with its legs BI and 83 resting against the respective flanges 85 to guide the bolt during its sliding movement. Leg 8I is provided with a notch 64 and leg 83 has an outturned tongue 86 to which is attached one end of a coil spring 81 while the'other end thereof is attached to the outer portion of housing 14 at II. This spring 81 serves to constantly urge the bolt I2 to the extended position with the forward end of the bifurcated member 82 resting against the shoulder 88 of housing I4 as shown in solid lines in Fig. '7.

The means for operating bolt 12 is best shown in Figs. 7, 8, 10, 11, and 12, wherein the bolt is operated from inside the room by hand knob 94 and from outside the room by key 96. Knob 94 has an axial bore 98 into which is slidably mounted a sleeve I00 having a laterally disposed pin I02 which engages groove I04 in the shank of knob 94 to prevent relative rotation of the knob and sleeve. Referring to Fig. 12, it will be noted that the shank I06 of knob 94 is offset at I08 to pass through an opening I09 formed through the escutcheon plate H0, and is further offset at II2 to receive the washer I I4. The outer end of shank I06 is upset to secure the washer II4 tightly in position and when so mounted, the knob can be rotated in the escutcheon plate H0. The sleeve I00 extends through a plate II8 positioned between the escutcheon H0, the door 22, thence through an opening I20 formed in the door to meet the housing I4. Housing "I4 is perforated at IZI in axial alignment with the sleeve I00, which extends therethrough to receive the lever I22 as clearly shown in Figs. 8 and 12. Theouter extremity of sleeve I 00 is slotted at I24 to receive the diametrically opposed radial lugs I26 which extend inwardly from the walls of circular opening I28 in the hub I30 of lever I22. Lugs I26, with their supporting ring I21, are offset relative tohub I30 so that ring I21 snugly fits into opening I2I in housing 14. A keeper plate I32, perforated at I34, is adapted to receive the outer end portion of sleeve I and to rest against the hub I30, with its inturned legs secured to the housing 14 (see Fig. 8). Sleeve I00 has a transverse partition I38 against which one end of compression spring I40 rests, while its other end rests against the inner bottom of bore 98. This spring is always under compression and permits the adjustment of the total length of the knob and sleeve to accommodate doors of different thicknesses.

The outer end portion of lever I22 has an outturned tongue, I42 which is adapted to fit into notch 84 formed in lever leg 8| so that as the knob 94 is rotated the lever will be oscillated to cause a movement of the bolt to or from the extended position. The escutcheon II 0 is secured to the door by means of screws I44 thus insuring the knob and its associated parts against longitudinal movement relative to the door.

An opening I46 extending from the outside of the door to recess 16 is so positioned that the barrel I48 of lock I50 will be positioned in axial alignment with the sleeve I 00. This lock is one of the well-known tumbler type which is normally locked and can be operated by means of key 96 to rotate the operating bar I 52 which is adapted to extend into sleeve I00 to engage radial lugs I26 whereby the lever I22 may'be operated ing bar is scored or grooved at I54 so that it may be'easily shortened to accommodate thin doors by simply'breaking'off any desired number of sections of the bar determined by said grooves. The lock is secured against removal by means of screws I56 which pass through plate II8 into the door to engage lugs I58 .Which are integral with the lock I50. Referring to Fig. '7, it willbe noted that the screws I56 arepositioned slightly'above the horizontal diameter of sleeve I and. that two sets of openings I51. are formed through wall of housing l4 and also two sets of openings I59'are formed through plate II8 (see Fig. 14) so. that .the housing I4 may be turned over when mounting. the door to operate in the reverse direction. When so reversed, the screws L56 will pass through the other set of openings. This double set of openings in the plate II8 makes it possible to reverse the door latching mechanism without inverting the lock. 9

Aspring member I60 secured at I62 to housing I4 is provided with an offset portion I64 which is in the path of travel of the bifurcated member 82. This spring is so positioned that the edge I65 of bifurcated membe'r 82 will contact the offset-portion I64- when the bolt is in its intermediate position to engage th extension bar 50. It will be noted that the bolt 12 is. chamfered at I61 so as to serve as .a latch bolt. The outer end portion of bolt 12 is provided with top and bottom parallel grooves I68 thus' forming a guide-way to receive the edges of bar 50 adjacent slot 58 when the door is to be opened to a limited distance. It will be observed that the enlarged portion 60 of slot 58 gradually narrows 'to meet the uniform slot 58 thus making it possible to permit the bolt toproperly turn therein when the door is moved toward the open position. After the bolt has engaged in slot 58 it can not be moved transversely therefrom without distorting the metal parts.

For the purpose of retaining the bolt in the retracted position when a latch bolt hereinafter described is utilized,the following means is provided. A sleeve IE9 is positioned in door 22 with its inner end projecting through the wall of housing I4. This sleeve is provided with a'flange I which is adaptedto receive screws I12 whereby the sleeve is held in position. having an operating knob I16 is provided with a helical groove II8 to receive a stationary pin I80 carried by sleeve I69 It will be noted that normally the bolt I14 does not contact the door bolt I2, however, when the door bolt is retracted,

a notch I 82 formed therein will be in register with bolt II4 so that by simply rotating knob I16 in the proper direction, the bolt II4 will'be forced into notch I82 thus retaining the bolt in the retracted position against the action of spring 87.

Reference will now be had to the auxiliary door latching mechanism I82 which is positioned above the door locking mechanism and is definitely positioned relative thereto by means of housing plate 80 to which it is secured. The door is morticed inwardly fromits edge at I84 to receive a housing I86 in which is slidably mounted a latch bolt I88 having a shank I90. A guide pin I92 mounted in housing I86 passes through slot I94 formed through shank I90 to limit the inward and outward movement of the latch bolt and to maintain it in properalignment. A compression spring I96 is mounted on shank I90 with one of its ends resting against A bolt I14 the head of the bolt I88 and its other en resting against stops I98 which are integral with the housing I86. lit will be noted that the latch bolt, due to'the action of spring I96, is normallyin the extended position so that it will enter. the opening I99 in plates38 and and maybe retracted by means of knobs 200 and .202 which are positioned respectively on the inside andoutside of the door and are joined together by means of square rod 204. This rod .204 is mounted ina square hole 206 formed through the hub 208. of lever 2I0. This lever is slotted at. 2I2 to receive the pin 2I4 which is rigidly mounted in the inner end portion of shank I90. By simply turning either knob 200 or 202 the latchbolt will be retracted and the door can be opened from either side. A projection I9I of plate 38 extending over the easing 34 serves as a strike plate for latch I88.

The modified form shown in Figs. 1'1; 18, 19, and 20 is provided with a bolt 2I6 having a square end which precludes automatic retraction thereof by simply closing the door against the strike plate, thus requiring the use of the key 96 to retract the bolt when it is desired to lock the. door when leaving the room. I

Another feature'is the novel means provided for securingthelever arm 2I8 to the sleeve I00. The housing wall I4 is inwardly ofiset at 220 and perforated at 222 to receive the reduced body portion 224 of sleeve 226. The head 228 of; sleeve 226 is positioned between the housing plate I4 and the door structure 22 to extend through opening 222 for'free rotary movement. The outer extremityof the sleeve 226 is reduced at 230 to receive the hub 232 of lever 2I8 so that the 40 slots I24 formed'in' sleeve I00.

to sleeve 226. The lock I on the-outside of the form as indicated by the identifying characters.

The operation of the door securing device shown in the preferred form is as follows. When the parts are in'the position shown in Fig. 8 wherein the door is shown closed, the spring 81 urges bolt T2 to the entirely extended position so that the outer end portion of the bolt 12 engages against flange 56 to prevent accidental outwardmovement of the door from its casing. When bolt I2 is in the extended position, it will be noted that the grooves I68 fo med adjacent the outer end thereof will be extended beyond the extension bar 50. When it is desired to open the door from the inside, the operator simply grasps knob 94 and turns it to move bolt 12' against the action of spring 81 to the retracted position shown in dotted lines in Fig. 7. The door can now be opened and when the operator releases the knob, 94, bolt I2 will be automatically extended and in position to act as a latch bolt when the door is swung to the closed position.

When it is desired to engage the extension bar 50 by means of bolt I2, the operator turns knob 94 until shoulder I66 of the bolt contacts ofiset I64 of spring I60. This spring is sufiiciently strong to indicate to the operator the position of the bolt. When the bolt is in this partially extended position, the grooves I168 in bolt I2 will be in alignment with bar 50 and the outer end of the bolt will be clear of flange 56. The door can now be moved toward the open position shown in Fig. 5 with the bolt in engagement with the slot 58 of bar 50 from which it can not be removed without distorting the metal parts.

By referring to Fig. 4 it will be noted that the bolt I2 will be positioned behind shoulder 62 when the door is partially opened so that the door will be held in a fixed position against opening and closing until the bar 50 is slightly raised to enter the reduced portion of slot 58. The slot 58 is sufliciently wide to permit the proper travel of the narrow necked portion of bolt 12 therethrough. Any desired distance of door opening can be obtained by varying the length of bar 50.

When the dead bolt 2I6 is used as shown in Figs. 17, 18, 19, and 20 it will be noted that the door can not be closed from the outside without using key 96, since there is no provision made for springing the bolt 2I6 to the retracted position by contacting the strike plate 49. This type of bolt, makes it necessary for the operator to have his key if he desires to lock the door or to leave it in the partially open secured position when leaving the room. v

This door securing means can also be used to an advantage on a door equipped with the automatic closing means, since the bolt will engage against notch 62 in the bar to maintain the door in a fixed partially open position regardless of the action of the door closing device or any other force that might tend to urge the door either toward the open or closed position.

Referring now to Figs. 1, 22, and 23 wherein is shown a different arrangement of the securing bolt and latch member. It will be noted that the latch bolt I88 is positioned directly beneath the lock bolt 2IB thus making it possible to materiallylessen the length of wall members 38 and 40 and door plate 80. The lock bolt and associated parts are substantially identical with those shown in Fig. 17 and operate in like manner.

The latch bolt housing I86 is mounted in a morticed recess I84 which extends inwardly from the edge of the door and is securely attached to the plat 80 so that the latch bolt normally extends outwardly from the edge of the door as clearly shown in Figs. 21 and 22. This latch bolt is operable from either side of the door by operating the knobs 200 or 282 as described above. While the mechanism shown for operating the latch bolt would necessarily move at each movement of the knob; however, it is quite apparent that any of the ordinary latch bolts might be used including the one in which the latch bolt can be depressed by forcing out on the outer inclined surface 220 thereof without moving the knob.

. The housing plates 38 and 40 are provided with registered openings 224 and 226 respectively. These openings are in alignment with the latch bolt I83 when the door is in the closed position, thus making it possible for the latch bolt to ride over the outer face of wall 40 and ordinarily drop into osition for latching as clearly shown in Fig. 22. It will be noted that the slot 58 formed bolt, thus making it possible to position the bolt through bar 50 without increasing slot 58 to an objectionable width.

To facilitate proper movement of latch bolt I88 and to prevent damage to the woodwork of th door casing, a striker lip 230 is provided, which is integral with the wall plate 38. When the latch bolt I88 is moved to the latching position, extension bar 50 will always be in the retracted position with the slot 38 in proper alignment to receive said bolt. As the door is being opened, the extension bar 50 will be moved outwardly more rapidly than the latch bolt so that when the latch bolt drops from the wall plate it will not interfere with the extension bar. This is also true when the door is being moved to the closed position. This arrangement of the latch bolt has a material advantage in that it secures the extension bar in the closed position under normal conditions when the door is latched.

While this modified form has been shown with the square lock bolt 2I6, it is also possible to use the beveled type of bolt such as shown at I2 in combination with this latch bolt.

The mounting of this door securing means to the door and door jamb is very simple and does not require any careful measurements since the parts are so constructed and related as to make it impossible to mount the parts in any other way than the proper relative relation. When it is desired to use only the secondary latching bar I88, the operator simply forces the bolt I2 to the retracted position, then turns knob I16 to force bolt IHl into the notch I82, thus making the bolt 12 inoperative.

What is claimed as new and is desired to be protected by Letters Patent is:

1. In a door securing device, a housing having an inner and an outer wall secured within a recess formed in the face of the door jamb, said outer housing wall having a, bight formed therethrough, a slotted extension bar pivotally mounted within said housing on a pivot secured at its opposite ends to said inner wall and outer wall respectively for limited extension therefrom, a bolt mounted for longitudinal sliding motion in said door to extend into said bight to selectively secure said door in the closed position to engage said extension bar or to release the door for opening, a screw mounted in said inner housing wall to secure the housing to said jamb, the head of said screw being covered by said extension bar when the bar is in the extended operative position and means operable from both sides of said door to selectively position said bolt to any one of said three predetermined positions.

2. In a door securing device, a housing having an inner and an outer wall secured to the face of the door jamb, said housing having a bight formed into its outer wall, a slotted extension bar pivotally mounted on a pivot carried by said inner and outer walls within said housing behind said outer wall for limited extension therefrom, a

bolt of rectangular cross sectional area, having oppositely disposed horizontal slots formed on its top and bottom portions, carried by the door for sliding movement relative thereto and adapted to enter said bight and engage said bar and move'it toward and from the extended position as the door is moved from and toward the closed position, and means securing said inner housing wall to said jamb covered by said extension bar when said bar is in the extended position.

3. In a door securing, device, an extension bar pivotally' mounted within a housing having an inner and an outer wall to receive the opposite end portions of the pivot pin of said bar and being secured flush with the face of the door jamb and with its outer wall covering said bar a bolt slidably mounted in the door for engagement with said extension bar, means freely operable from one side of the door only forlsliding said bolt to and from the bar engaging position, a key operated means on the opposite side of said door engaging said first named bolt operating means and operable to adjust said bolt to its various positions, and resilient means operable to, frictionally engage said bolt when it i in the bar securing position whereby its position is indicated to the operator. v

4. In a door securing device, a housing secured to the face of the door jamb, a slotted extension barpivotally mounted in said housing for limited extension therefrom, a bolt slidably carried by the door to operatively engage said extension bar to move it to and from the extended position as the door is operated on its hinges, and a latch bolt carried by said door adapted to secure said extension bar against accidental movement in the retracted positionwhen the door is closed.

ALLEN CHAMBERS. ROY E. GEARHART. 

